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# VZUSBController.Delegate

```
protocol Delegate : NSObjectProtocol
```

## Overview\abstract Delegate object for a VZUSBController.
\discussion A class conforming to the VZUSBControllerDelegate protocol can provide methods that
get invoked when the USB controller’s state changes.

## Topics

### Instance Methods

[`func usbController(VZUSBController, usbPassthroughDeviceDidDisconnect: VZUSBPassthroughDevice)`](/documentation/Virtualization/VZUSBController/Delegate-swift.protocol/usbController(_:usbPassthroughDeviceDidDisconnect:))

## Relationships

### Inherits From

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

---

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